the mission "party Over" huge problem

Gilly1987

im got a problem this mission "party over" soon as i have to start defending gay tony ,he keeps dying even if hes not being shot at after about 20 seconds ive read about other people experiencing this on the pc version when there game is modded,so i reinstalled with zero mods ,and im still getting this glitchi have the official eflc disc not the dlc and im pissed